Examples with ConcatKDFBytesGenerator org.ethereum.ConcatKDFBytesGenerator used on opensource projects

Example 1 with ConcatKDFBytesGenerator

use of org.ethereum.ConcatKDFBytesGenerator in project rskj by rsksmart.

the class ECIESTest method testKDF.

@Test
public void testKDF() {
    ConcatKDFBytesGenerator kdf = new ConcatKDFBytesGenerator(new SHA256Digest());
    kdf.init(new KDFParameters("Hello".getBytes(), new byte[0]));
    byte[] bytes = new byte[2];
    kdf.generateBytes(bytes, 0, bytes.length);
    assertArrayEquals(new byte[] { -66, -89 }, bytes);
}

Example 2 with ConcatKDFBytesGenerator

use of org.ethereum.ConcatKDFBytesGenerator in project rskj by rsksmart.

the class ECIESCoder method decrypt.

public static byte[] decrypt(ECPoint ephem, BigInteger prv, byte[] iv, byte[] cipher, byte[] macData) throws InvalidCipherTextException {
    AESFastEngine aesFastEngine = new AESFastEngine();
    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(), new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(), new BufferedBlockCipher(new SICBlockCipher(aesFastEngine)));
    byte[] d = new byte[] {};
    byte[] e = new byte[] {};
    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, iv);
    iesEngine.init(false, new ECPrivateKeyParameters(prv, CURVE), new ECPublicKeyParameters(ephem, CURVE), parametersWithIV);
    return iesEngine.processBlock(cipher, 0, cipher.length, macData);
}

Example 3 with ConcatKDFBytesGenerator

use of org.ethereum.ConcatKDFBytesGenerator in project rskj by rsksmart.

the class ECIESCoder method makeIESEngine.

private static EthereumIESEngine makeIESEngine(boolean isEncrypt, ECPoint pub, BigInteger prv, byte[] iv) {
    AESFastEngine aesFastEngine = new AESFastEngine();
    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(), new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(), new BufferedBlockCipher(new SICBlockCipher(aesFastEngine)));
    byte[] d = new byte[] {};
    byte[] e = new byte[] {};
    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, iv);
    iesEngine.init(isEncrypt, new ECPrivateKeyParameters(prv, CURVE), new ECPublicKeyParameters(pub, CURVE), parametersWithIV);
    return iesEngine;
}

Example 4 with ConcatKDFBytesGenerator

use of org.ethereum.ConcatKDFBytesGenerator in project rskj by rsksmart.

the class ECIESTest method makeIESEngine.

private static EthereumIESEngine makeIESEngine(boolean isEncrypt, ECPoint pub, BigInteger prv, byte[] IV) {
    AESFastEngine aesFastEngine = new AESFastEngine();
    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(), new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(), new BufferedBlockCipher(new SICBlockCipher(aesFastEngine)));
    byte[] d = new byte[] {};
    byte[] e = new byte[] {};
    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, IV);
    iesEngine.init(isEncrypt, new ECPrivateKeyParameters(prv, curve), new ECPublicKeyParameters(pub, curve), parametersWithIV);
    return iesEngine;
}